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United States Patent | 6,179,231 |
Csendes | January 30, 2001 |
A cylindrical chamber has a drive shaft rotatably mounted therein and extending along substantially the entire longitudinal extent thereof. This drive shaft is rotatably driven by a motor at a speed of 1,500-10,000 rpm. Solid particles to be comminuted which may be of coal, limestone/dolomite, cement or lime are fed into the chamber. Pressurized air is fed into the bottom of the chamber. Uplifting pressure for driving the gas and particles upwardly in the chamber may be provided by pressurized gas fed in through a tangential inlet in conjunction with a stationary velocity head. The upwardly driven particles are first driven through a plurality of short arm rotors which are driven by the shaft and provide a centrifugal force which comminutes the particles. The particles are then driven through a plurality of semi-permeable screens which are rotatably driven by the shaft and further comminute the particles. High apex flow enhancers are installed along the walls of the chamber to enhance the fluid flow. The fully comminuted particles are expelled from the top end of the chamber.
Inventors: | Csendes; Ernest (514 Marquette St., Pacific Palisades, CA 90272) |
Appl. No.: | 350904 |
Filed: | July 12, 1999 |
Current U.S. Class: | 241/19; 241/56; 241/57; 241/69; 241/79.1; 241/97; 241/275 |
Intern'l Class: | B02C 023/32 |
Field of Search: | 241/275,80,97,19,56,79.1,57,69 |
293047 | Feb., 1884 | Mackey. | |
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5695130 | Dec., 1997 | Csendes. | |
5826807 | Oct., 1998 | Csendes. | |
5850977 | Dec., 1998 | Csendes. |